Filling replenishing shuttle



. June 30,1931. F. E DOUGLAS FILLING REPLINISHING SHUTTLE Filed May 14, 1930 (NI/E/VTOR, I

' ATTORNEY the j avvs and-preventing breakage,

Patented June 30,12 1,

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' I iApp' lieation fi led my 14,

invention relates to loom shuttles and is more1particularly directed i toshuttles of:

the filling replenishing type wherein the bobbin or filling carrier in the shuttle is changed 3 from' time to time. A

It .is nowthe ordinary practice to "provide filling replenishing shuttles I With a shuttle spring formed with bobbin holding aws sufiiciently stifi tosupportthefilling carrier orbobbin in theshuttle and yet possessed of sllflicient resiliency topermit the automatic substitution of one filling carrier or bobbin for. another from time to time. WVhen filling replenishment is efiected; the bobbin holding jaws/aresuddenly separated-or flexed out- Wardlyastheoutgo'ing filling'carrier or bol bin; is :ej ected and then suddenly" approach each-other orare flexed inwardly as thefresh filling carrier or bobbin finds itsoperative position between. the bobbin hold-ingjaws. I 1

4 The shuttle spring; is usually securedlin the shuttle by a transverse bolt Which passes through aabolt hole" formed in the shankportion: of v the shuttle spring :and the sudden zu flexing ofthe'jaws first inone andthen' in the. opposite direction has caused the jaws to break, particularly at ornear the bolt opening Where the shank of the; shuttle spring afi'ords a zone which is. less stilt ormore easily responsive to movements of 'the bobbin' holding-j ws: r r 1 @One of thepurposes grsent niviltion': is to :provide a 1 shuttle, spring in 'which 1 the pronounced zone 10f iweakness at-the bolt openingof the shank mayl'beavo-ided a'nd the j avvs of the shuttle spring be alloWed -'to flex along an areaofthe shank-extending a substantial distance longitudinally] thereof,

' ethus' dis-tributing the' flexulie' movement verse bolt fiom drayving "the lwallsf of" the 1930'; 'serialf in. 452,359.

thro

imedium tocushionthe action of the'bobbi'n s r holding jiI-WSlIl" their movements t'owards" and'from each other. Ithas beenifound'that'i klubricant,-suc h as oil or the lik y'vill offer? i a w-oodengfiller blockfimpregnated vvith" a such' a ou'shioningefiect tothe movement tr :the bobbin holding'fjawsuasfto contribute-f largely to non'breakag e; a" v p The invention a and: novel features there'f will best;v be made f clear, from the 'filloWirig description andthe accompa ofone good form thereo'flf -In'tl1jedravvings; ,7 f 1 ?'Fig. l is longitu'dinal'sectionof filling; replenishing shuttle provided 'vvil'lr the: press entin'ventio away; 1 7 g I spring-having the wooden filler-block seated also'the vertical or throughebolt-r between the '1 end of thewoodenfiller block "and thefben'd I -of the shuttle spring; andr l 1 Fig; 3 is an explodedeview o f the are; we them in their relative positions iforrass-eiilblyl"a plenishing type provided withjthe bobbin ch'amber'Qand the shank receiving chamber these parts may beet usual or any pre 3'and ferred construction. 3' c m The shuttle springembodies the bobbin holdin'g jaws 4fand 5 which may have their end portions rovided 'WitliQa downward bevel 6 and-" ecesses? for enga ementwith, the usualrings on the bobbin head, andfthese' parts 'm'ay jbeas" usual; The shuttle spring.

1 as shown in the 'present"instance has shank portion-' Which' when'the "parts are as 3 sembled is f seated in 'ithe shank "receiving i chamber f3 of'the shuttle, ins-shown; thef a f shank consistsiof two leg portions 8- an 9f which are'fipreferably oinedtogether atthe bend =10,- and extending outwardly from the ugh" the bolt Openingof 5- part of the shuttlbei-iig-broken 2 is a top' i lan 'view of 'the'shu itle l i in the shank portion thereof and showing" v. a to i stltutlng the present nvention, show ng; Y

The shuttlel jmay beer the usual filling ire-- two legs 8 and 9 of the shank are the bobbin holding aws 4 and 5.

The shank portion of the shuttle spring is provided with a slot 11 which extends longitudinally of the shank and communicates with the opening through which the trans verse bolt 12 passes when the parts are as sembled, as indicated in Fig. 1.

Preferably a slot 11 is formed in each leg portionSand 9 of the shank and extends from the bolt opening to the rear end of each leg portion of the shank where the two slots merge or communicate. From this construction it will be apparent that the bobbin holding jaws may flex not only at the single opening for the bolt as heretofore was the practice, but throughout the length of the shank portion from the bolt opening to the end of the leg portions of the shank, thereby distributing the spring action of the aws.

In order that the sudden action of the bobbin holding jaws may in a measure be cushioned, the present invention contemplates a wooden filler block 13 which may be seated between the legs 8 and 9 of the shank portion of the shuttle spring, as more clearly indicated in Figs. 1 and 2, and in order that the cushioning effect of the wooden block 13 may take up the spring action of the jaws during replenishment without detriment thereto, the forward end portion of the wooden filler block 13 is extended beyond the bends 14 of the bobbin holding jaws, with the result that the wooden filler block imparts a more extended bearing to the jaws as they flex during replenishment than would be the case should the filler block present corner portions to the action of the jaws.

In some cases it is sufiicient to form. the filler block of suitable wood to impart an elastic or cushioning effect to the jaws, but preferably the wooden block will be impregnated with a lubricant such as oil or the like whereby the cushioning effect of the block is increased.

The wooden filler block 18 is provided with an opening 15 through which passes the transverse bolt 12 when the parts are in assembled position as indicated in Fig. 1.

In assembling the parts the shuttle spring has the shank portion thereof seated in the shank receiving chamber of the shuttle and the wooden filler block is seated between the leg portions of the shank. It is common in filling replenishing shuttles to provide a bobbin guide for directing the bobbin into position between the bobbin holding aws during replenishment, and such bobbin guide may be formed as indicated in Fig. 3 wherein there is a top plate 16 and a bottom plate 17 joined by the inclined guide 18 which extends between the base portion of the bobbin holding jaws. The top and bottom plates 16 and 17 are each provided with an opening 19 and when the bobbin guide is placed in position,

as indicated in Fig. 1, and the transverse bolt 12 has been passed through the slotted por tion of the shank of the shuttle spring and the opening 15 of the wooden block, the bobbin guide is moved to place between the bobbin holding jaws and the through-bolt 20 is passed through the openings 19 in the top and bottom plates of the bobbin guide and between the bend 10 of the shank and the end of the wooden filler block 13, with the result that the through-bolt 20 serves effectively to prevent longitudinal movement of the shuttle spring relative to the shuttle.

The through-bolt20 lik-ewisepasses through an opening in the wood of the shuttle below the lower plate 17 and is there engaged by a nut 21 for locking the through-bolt and the associated parts in operative position.

From the construction described it will be apparent that the slots 11 in the leg portions of the shank of the shuttle spring extend from the opening for the transverse bolt 12 longitudinally of the shank and about the bend thereof where the two slots communicate, thereby providing an extensive yielding portion in the shank and distributing the strain of the bobbin holding jaw movements substantially throughout the shank portion of the shuttle spring.

The elastic nature of the wooden filler block serves also to cushion the movement of the bobbin holding jaws so that during replenishment rupture or breakage of the bobbin holding jaws as heretofore experienced is entirely obviated and the bobbin holding jaws move with less strain or crystallizing effect upon the metal.

Obviously, changes may be made in the details of some of the parts, the main characteristic of the invention residing in distributing the strain of flexure of the bobbin holding jaws so danger of breakage is avoided, even after long usage. It will also be noted that the wooden block acts with a cushioning effect upon. the bobbin holding jaws and cooperates with the distribution of aw movements due to the longitudinal slots in the shank portion of the shuttle spring, during replenishment of filling.

What is claimed is:

1. A filling replenishing shuttle having a bobbin holding spring comprising two bobbin holding j aws, and an integral shank connecting the jaws and provided with a slot in each leg of the shank which extends to and about the bend of the shank to form a yielding zone for the aws during replenishment, a transverse bolt passing through the slots, and a bolt passing vertically through the shank inside the bend thereof.

2. A filling replenishing shuttle having a shank receiving chamber, a shuttle spring having a shank seated in said chamber and bobbin holding jaws, each leg of the shank having a. slot extending to the end of the acter thatthe wooden filler block may act shank, a wooden filler block seated between I the legs of the shank and presenting an e1as tic medium for the bobbin holding ]2LWS durv I I ing'replenishment of filling.

3. -A filling replenishingvshuttle having a bobbin spring comprising a, shank andbobbin holding jaws, and a wooden filler block.

seated in the shankof the shuttle spring and presenting an elastic cushion to the bobbin holding jaws as they are flexed during replenishment of filling.

4. A filling replenishing shuttle having a shank receiving chamber, a shuttle spring comprising a shank-seated in sai'dchamber and providedwith bobbin holding jaws, a, I

filler block seated in the shank-of the shuttle spring and formed of wood impregnated.

with a lubricant to increase its elastic charas an elastic cushion forthe bobbin holding jaws as they'are flexed during replenishment of filling. I

of the shank. I In; testimony 5. As an article:ofmanufacture, a shuttle e spring having bobbin holding jaws and a;

shank integrally connecting the jaws and provided witha bolt opening ineach leg of the shank and a slot extending longitudinally" I 'f' I of each leg of the. shankfrom the bolt opena ing and about the bend of the shank.

' 6. As ,anarticle of manufacture-5 a shuttle spring comprising bobbin-holding jaws each having a leg portion providedi'with a transver bolt p ning and a slot/extending backwardly from each bolt opening to the ter-v minal endsof the legfportionsof the bobbin holding aw's.

portion, and a slot extending about the bend of the shank; portion and communicating I i with the two bolt openings to provide a zone of fiexure from the boltopenings to the bend name to this specification.

FREDRIC Ef oUGLA's',

whereof;Ifhave'signed my 

